RGeo is a geospatial data library for Ruby. RGeo::ActiveRecord is an optional RGeo module providing some spatial extensions to ActiveRecord, as well as common tools used by RGeo-based spatial adapters.

Data anonymization tool for RDBMS and MongoDB databases

GeoBlacklight provides a world-class discovery platform for geospatial (GIS) holdings. It is an open collaborative project aiming to build off of the successes of the Blacklight Solr-powered discovery interface and the multi-institutional OpenGeoportal federated metadata sharing communities.

GeoJSON Diff takes two GeoJSON files representing the same geometry (or geometries) at two points in time, and generates three GeoJSON files represented the added, removed, and unchanged geometries.

Allows quick and easy connection to the cartodb API.

geoq is a command-line utility for GIS format conversion and common GIS operations

Adds spatial methods to a model.

Web mapping libraries like Leaflet often don't support PostGIS's native Well-Known Binary (WKB) and Well-Known Text (WKT) representation, but they do support GeoJSON, so this library helps translate between the two.

A collection of APDM local paper-related things.

A ruby interface to the application tracking data interchange specification (ATDIS) API

Import CSV, SHP, and other files with data into a PostgreSQL table

Simple tool over geos and co

Component for manage geo files, like shapefiles, in a participatory space.

Mapfish Appserver is a framework for web mapping applications using OGC standards and the Mapfish protocol.

geo-cli is a command-line utility for converting between common GIS serialization formats.

C Bindings for Uber's H3 library

Ruby SDK for Metwit public APIs

Ruby wrapper around data from Natural Earth, free vector and raster map data @ naturalearthdata.com.

A gem for reverse geocoding lat/lng pairs into a 3 letter ISO country code, fully in-memory with no external service access.

Ruby translators to transform various metadata feeds into solr documents and a command-line utility to access/utilize the gem's translators to harvest metadata into a working solr instance.